HELP FILE
Computer Health
Health is an indicator shown on the Computers list.
Health indicator icons are color coded and represent the single most serious problem detected on a host. They are shown in the Health column in Detail view.
Health is determined by Windows updates and anti-virus settings.
Health is determined by Windows updates, anti-virus settings, and alerts
Health indicator icons:
The host requires reboot to finish the installation of important Windows updates or the Windows updates service is not running on the host. There is a critical issue with the anti-virus software. 
There is an issue with the anti-virus software, there are unacknowledged alerts, or the installation of important Windows updates is pending on the host.There is an issue with the anti-virus software or the installation of important Windows updates is pending on the host. 
The host is running the latest Windows updates and the most up-to-date virus definition.The host is running the latest Windows updates, the most up-to-date virus definition, and there are no unacknowledged alerts. 
You must update the host to see its full health report.Either you must update the host to see its full health report, or the anti-virus software is not fully supported.